Premium
Volume flow measurement in hemodialysis shunts using time‐domain correlation.
Author(s) -
Basseau F,
Grenier N,
Trillaud H,
Douws C,
Saint-Amon A,
de Précigout V,
Combe C
Publication year - 1999
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1999.18.3.177
Subject(s) - medicine , hemodialysis , fistula , flow velocity , receiver operating characteristic , nuclear medicine , volume (thermodynamics) , complication , volumetric flow rate , brachial artery , reproducibility , biomedical engineering , flow (mathematics) , arteriovenous fistula , radial artery , surgery , radiology , artery , mechanics , blood pressure , chromatography , chemistry , physics , quantum mechanics , relaxation (psychology)
Volume flow was measured in 58 hemodialysis shunts (32 grafts and 26 radial fistulas) using the color velocity imaging‐quantification method. This method is based on time‐domain correlation for velocity calculation and integration of time‐varying velocity profiles generated by M‐mode sampling. Measurements were made in the brachial artery to estimate radial fistula flow or directly in the grafts. Intraoperator reproducibility was 14.9% for fistulas and 11.6% for grafts. Flow rate was significantly lower in abnormal shunts associated with a functional disorder or a morphologic complication (808 ml/min +/‐ 484) than in shunts associated with no abnormalities (1401 ml/min +/‐ 562). Receiver operating characteristic curves showed that a flow rate of 900 ml/min for fistulas and 1300 ml/min for grafts provided 81% and 79% sensitivity and 79% and 67% specificity, respectively. A functional disorder or a morphologic complication was associated with all fistulas and grafts in which flow rates were lower than 500 ml/min and 800 ml/min, respectively.